320 
in Prof. Leuckart’s Museum, was really Belryce mollis (Phil.). 
Here it may be remarked that the Messina specimens were in 
good condition and preserved in spirit. Kolliker, in his descrip- 
tion of the coenenchyma of this species, says that the calcareous 
spicules are all scale-shaped, and that these are more or less 
toothed ; that they vary in outline, the extremes being — (1) large 
scales, with small middle outgrowths ; and (2) small scales, with 
large outgrowths or excrescences. Those seen in profile mostly 
appear of a “nine-pin” shape, with clipped ends; all these 
spicules are “ twins,” and in most the line of separation is clearly 
discernible. These various forms of spicules were exhibited. 
The “scale” spicules, large and small, of all manner of irregularity 
of outline, were found, forming an outer crust to the ectoderm ; 
but, in additiou, there was found another form of spicule found 
by Kolliker occurring in Eunicea, which did not appear to be 
a “ twin ” form of spicule, and which seemed to be very distinct 
from any of the forms called scale-forms by Kolliker. These 
spicules appeared to occupy the inner portion of the coenenchyma, 
and especially that portion of the base of the polyps ; they have 
been referred to by Kolliker as the “ Blattkeulen,” but this name 
he applies also to spicules of a very different shape ; perhaps the 
name “ shuttlecock ” spicule may be found to be more appro- 
priate. 
Mr. Archer exhibited another new form of Heliozoan Rhizopod, 
of a type similar to that shown by him at last meeting, believed 
to be identical with that spoken of, but not described, by Eocke 
(Siebold and Kolliker’s ‘ Zeitschrift fur wiss. Zoologie,’ Bd. xviii, 
Heft iii, page 345, t. xxv),that is, the present forming a second species 
in the genus Heterophrys (Arch.). It was to be regretted that he 
had not been able to meet with a specimen of the form shown on 
the last occasion, for the sake of contrast with the new form now 
drawn attention to ; and it was still further to be regretted that 
the example of the latter now presenting itself had suffered much 
(upon the slide) in the transit down to the meeting ; and as he 
had spent hours in searching for the only one he had met with 
for this occasion, he was afraid it womld be fruitless delay at the 
meeting to try to search in the material for another specimen. 
But crushed and somewhat crowded upon by other objects as the 
example shown might be, lie was very glad to be so fortunate as 
to have been able to get it, as the specimens were greatly dimi- 
nishing in the material ; he trusted, however, the various points to 
which he would wish to draw attention could be made apparent. 
The present was a good deal larger form than Eocke’s, the central 
sarcode mass hyaline, but densely loaded with chlorophyll- 
granules, and possessing a few smaller, darkish granules ; pseudo- 
podia emanating therefrom long, filiform, but comparatively not 
very slender ; outer stratum cloudy and granular, and at the 
periphery divided into an innumerable quantity of slender hair- 
like processes. He would name this fine form Heterophrys my- 
